code: def forward_test(self, xb):
      imgs = xb[0]["img"]
      img_metas = xb[0]["img_metas"]
      return self.model.forward_test(imgs=[imgs], img_metas=[img_metas])
  
file_path: icevision/icevision/models/mmseg/fastai/callbacks.py
imports: from icevision.imports import *
  from icevision.utils import *
  from icevision.core import *
  from icevision.data import *
  from icevision.engines.fastai import *
  from icevision.models.mmseg.utils import *
  from icevision.models.mmseg.common.prediction import convert_raw_predictions
label_desc: Use image node_id 3 for calling the _ModelWrap obj's underlying member method code with example usage: obj.forward_test(xb) and returns: self